[postgis-devel] [PostGIS] #1252: SRID appearing in ST_AsText for particular multipolygon
PostGIS
trac at osgeo.org
Sun Nov 6 11:25:23 PST 2011
#1252: SRID appearing in ST_AsText for particular multipolygon
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Reporter: robe | Owner: pramsey
Type: defect | Status: new
Priority: medium | Milestone: PostGIS 1.5.4
Component: postgis | Version: 1.5.X
Keywords: windows, 64-bit |
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Comment(by pramsey):
Somehow you've created a geometry collection that has the SRID set on an
interior geometry. Now, that's not supposed to happen, so when you push it
through other, saner, processes the result gets washed away. And if you go
into geography (or into PostGIS 2.0) where it's not even possible to
represent such a thing in the serialization, the effect is guaranteed to
disappear.
Since this problem is not actually a corruption of the geometry itself,
just a slight breaking of representation rules, and because it gets washed
away so easily, and because nobody else is likely going to be able to
product it, I'd suggest closing as wontfix. If we're concerned about the
AsText representation, we could leave this open and try to ensure that the
WKT generator in 1.5 (which of course has been replaced in 2.0) doesn't
output SRID information on subgeometries as a matter of policy. It won't
fix the geometry, but it will hide the effect. If we're going to spend
time farting around with 1.5 representation functions though, the bug in
the WKB parser is far more pressing (the fact that malformed WKB can crash
the backend is a pretty big problem, which unfortunately requires a pretty
big solution).
--
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1252#comment:14>
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